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Title: Edge Thomson scattering diagnostic on COMPASS tokamak: Installation, calibration, operation, improvements

The core Thomson scattering diagnostic (TS) on the COMPASS tokamak was put in operation and reported earlier. Implementation of edge TS, with spatial resolution along the laser beam up to ∼1/100 of the tokamak minor radius, is presented now. The procedure for spatial calibration and alignment of both core and edge systems is described. Several further upgrades of the TS system, like a triggering unit and piezo motor driven vacuum window shutter, are introduced as well. The edge TS system, together with the core TS, is now in routine operation and provides electron temperature and density profiles.
Authors:
; ; ; ; ; ; ;  [1] ; ; ; ;  [1] ;  [2] ;  [1] ;  [2] ; ;  [3] ;  [4] ;  [5] ;  [6]
  1. Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague (Czech Republic)
  2. (Czech Republic)
  3. CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom)
  4. School of Electrical Engineering, Division of Fusion Plasma Physics, KTH Royal Institute of Technology, SE-100 44 Stockholm (Sweden)
  5. Consorzio RFX, Corso Stati Uniti, 4-35127 Padua (Italy)
  6. ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St Paul lez Durance (France)
Publication Date:
OSTI Identifier:
22303716
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 Euratom; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CALIBRATION; COMPASS-D TOKAMAK; ELECTRON TEMPERATURE; LASER RADIATION; PHOTON BEAMS; SHUTTERS; SPATIAL RESOLUTION; THOMSON SCATTERING; WINDOWS